US3943204A - Method for improving the extraction properties of a tributyl phosphate solution - Google Patents
Method for improving the extraction properties of a tributyl phosphate solution Download PDFInfo
- Publication number
- US3943204A US3943204A US05/439,792 US43979274A US3943204A US 3943204 A US3943204 A US 3943204A US 43979274 A US43979274 A US 43979274A US 3943204 A US3943204 A US 3943204A
- Authority
- US
- United States
- Prior art keywords
- tributyl phosphate
- degradation products
- diazomethane
- solution
- extraction properties
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000000605 extraction Methods 0.000 title claims abstract description 24
- YXHKONLOYHBTNS-UHFFFAOYSA-N Diazomethane Chemical compound C=[N+]=[N-] YXHKONLOYHBTNS-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007857 degradation product Substances 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 11
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 8
- JYFHYPJRHGVZDY-UHFFFAOYSA-N Dibutyl phosphate Chemical compound CCCCOP(O)(=O)OCCCC JYFHYPJRHGVZDY-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 150000005691 triesters Chemical class 0.000 claims description 4
- BNMJSBUIDQYHIN-UHFFFAOYSA-N butyl dihydrogen phosphate Chemical compound CCCCOP(O)(O)=O BNMJSBUIDQYHIN-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 239000003085 diluting agent Substances 0.000 claims description 2
- 150000008282 halocarbons Chemical class 0.000 claims description 2
- 239000003350 kerosene Substances 0.000 claims description 2
- 238000012958 reprocessing Methods 0.000 abstract description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 5
- 229910019142 PO4 Inorganic materials 0.000 abstract description 2
- 239000003758 nuclear fuel Substances 0.000 abstract description 2
- 235000021317 phosphate Nutrition 0.000 abstract description 2
- -1 triester phosphates Chemical class 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 35
- 229910052778 Plutonium Inorganic materials 0.000 description 10
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 description 10
- 229910052770 Uranium Inorganic materials 0.000 description 5
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 5
- 230000032050 esterification Effects 0.000 description 4
- 238000005886 esterification reaction Methods 0.000 description 4
- 239000012527 feed solution Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910052768 actinide Inorganic materials 0.000 description 3
- 150000001255 actinides Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KZVBBTZJMSWGTK-UHFFFAOYSA-N 1-[2-(2-butoxyethoxy)ethoxy]butane Chemical compound CCCCOCCOCCOCCCC KZVBBTZJMSWGTK-UHFFFAOYSA-N 0.000 description 1
- XNDZQQSKSQTQQD-UHFFFAOYSA-N 3-methylcyclohex-2-en-1-ol Chemical compound CC1=CC(O)CCC1 XNDZQQSKSQTQQD-UHFFFAOYSA-N 0.000 description 1
- FFKZOUIEAHOBHW-UHFFFAOYSA-N N,4-dimethyl-N-nitrosobenzenesulfonamide Chemical compound O=NN(C)S(=O)(=O)C1=CC=C(C)C=C1 FFKZOUIEAHOBHW-UHFFFAOYSA-N 0.000 description 1
- ZLYXMBXMECZBSN-UHFFFAOYSA-N [Pu+3] Chemical compound [Pu+3] ZLYXMBXMECZBSN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- NILJXUMQIIUAFY-UHFFFAOYSA-N hydroxylamine;nitric acid Chemical compound ON.O[N+]([O-])=O NILJXUMQIIUAFY-UHFFFAOYSA-N 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910002007 uranyl nitrate Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/42—Reprocessing of irradiated fuel
- G21C19/44—Reprocessing of irradiated fuel of irradiated solid fuel
- G21C19/46—Aqueous processes, e.g. by using organic extraction means, including the regeneration of these means
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/025—Purification; Separation; Stabilisation; Desodorisation of organo-phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
- C07F9/09—Esters of phosphoric acids
- C07F9/11—Esters of phosphoric acids with hydroxyalkyl compounds without further substituents on alkyl
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Definitions
- This invention relates to a method for improving the extraction properties of a solution of tributyl phosphate in an organic solvent. More specifically, this invention relates to a method for improving the extraction properties of a solution of tributyl phosphate by esterifying the chemical and radiological degradation products of tributyl phosphate which may be present therein.
- tributyl phosphate as an extractant for uranium and plutonium has had widespread acceptance in the nuclear industry for the past 25 years. This material, nevertheless, suffers from both chemical and radiological degradation when exposed to the radioactive solutions containing extractable actinides.
- DBP dibutyl phosphate
- MBP mono-butyl phosphate
- phosphoric acid a detrimental effect upon the extraction process.
- problems created by the presence of these materials are poor phase separation in the contractor, with subsequent losses of entrainment and/or reduced throughput, extraction of fission products along with the actinides, resulting in a loss of purity of uranium and plutonium, loss of actinides caused by the formation of nonstrippable complexes in the organic phase, and the formation of precipitates.
- the esterifying agent may be any compound which will quickly and easily esterify the degradation products of tributyl phosphate without forming interfering by-products or causing any adverse side reactions while producing a triester which has extraction properties similar to tributyl phosphate.
- One esterifying agent which has been found to be exceptionally effective is diazomethane.
- diazomethane when in a pure or highly concentrated form, is susceptible to explosive detonation by shock or by catalysis on a sharp edge or a scratch and that it is also highly toxic.
- concentrations of 0.1 M or less in a suitable solvent it is relatively easy to handle and no problems have been encountered.
- solvents such as, for example, ether, carbon tetrachloride and other halogenated hydrocarbons and normal paraffin hydrocarbon or NPH.
- NPH would be especially suitable, since it is the diluent presently in use for tributyl phosphate in the Purex Process.
- the NPH contains 97 w/o of C 10 to C 14 straight chain hydrocarbons having a specific gravity of 0.74 to 0.76 at 60°F. and a flash point of 155° to 160°F.
- the amount of diazomethane necessary to esterify the degradation products is a quantity equal to the quantity of the degradation products present in the tributyl phosphate solution. However, in order to insure that esterification is complete, it is preferable that the amount of diazomethane be double the quantity of degradation products present. This will insure that esterification is complete even if small quantities of water, which would hydrolyze the diazomethane, are present in the organic solution. Any excess diazomethane which may remain after esterification is complete will not affect the extractability of the tributyl phosphate solution, since it will be hydrolyzed as soon as it comes in contact with any aqueous solution.
- diazomethane in a dilute solution can be readily accomplished by dissolving N-methyl-N-nitroso-p-toluenesulfonamide to 0.1 M in diethyl ether and adding this dropwise to a solution of sodium hydroxide, water and dibutylcarbitol maintained at a temperature of 60°.
- the diazomethane codistills from the reaction mixture with ether so that a dilute solution is always maintained.
- the distillate is condensed at a cold finger and is collected in an ice-cooled receiver.
- Ether solutions of diazomethane can be kept for several weeks at a temperature near 0°C.
- the preferred temperature for the operation of this process is ambient, since higher temperatures will cause a loss of diazomethane.
- Feed solution 1 M aluminum nitrate nonahydrate, 2 M HNO 3 , spiked with 1 g/l Pu
- Extracting solution 20% TBP/CCl 4 + 0.02 M DBP
- the process of the invention can easily and readily be incorporated into the Purex Process stream after plutonium has been stripped from the extractant.
- a solution of diazomethane could continuously be added to the spent TBP extractant solution in place of a scrubbing step before it is recycled to extract uranium and plutonium from the acid feed solution.
- the addition of diazomethane to tributyl phosphate solution greatly improves the extractability of the solution and provides a simple, effective method for improving the extraction properties of a degraded tributyl phosphate solution.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Extraction Or Liquid Replacement (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/439,792 US3943204A (en) | 1974-02-05 | 1974-02-05 | Method for improving the extraction properties of a tributyl phosphate solution |
| GB131075A GB1465241A (en) | 1974-02-05 | 1975-01-13 | Method for the extraction properties of a tributyl phosphate solution |
| CA217,987A CA1034769A (en) | 1974-02-05 | 1975-01-15 | Method for improving the extraction properties of a tributyl phosphate solution |
| BE2054127A BE825140A (fr) | 1974-02-05 | 1975-02-04 | Procede permettant d'ameliorer les caracteristiques d'extraction d'une solution de phosphate de tributyle |
| FR7503454A FR2259834B1 (de) | 1974-02-05 | 1975-02-04 | |
| AU77877/75A AU487224B2 (en) | 1974-02-05 | 1975-02-04 | Method for improving the extraction properties ofa tributyl phosphate solution |
| JP1446275A JPS50140795A (de) | 1974-02-05 | 1975-02-05 | |
| DE19752504786 DE2504786A1 (de) | 1974-02-05 | 1975-02-05 | Verfahren zur verbesserung der extraktionseigenschaften einer tributylphosphatloesung, insbesondere beim verfahren zur trennung von plutoniumund uranwerten |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/439,792 US3943204A (en) | 1974-02-05 | 1974-02-05 | Method for improving the extraction properties of a tributyl phosphate solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3943204A true US3943204A (en) | 1976-03-09 |
Family
ID=23746157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/439,792 Expired - Lifetime US3943204A (en) | 1974-02-05 | 1974-02-05 | Method for improving the extraction properties of a tributyl phosphate solution |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3943204A (de) |
| JP (1) | JPS50140795A (de) |
| BE (1) | BE825140A (de) |
| CA (1) | CA1034769A (de) |
| DE (1) | DE2504786A1 (de) |
| FR (1) | FR2259834B1 (de) |
| GB (1) | GB1465241A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4311681A (en) * | 1980-05-19 | 1982-01-19 | Fmc Corporation | Method of regenerating phosphoric acid extraction solvent |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987145A (en) * | 1975-05-15 | 1976-10-19 | The United States Of America As Represented By The United States Energy Research And Development Administration | Ferric ion as a scavenging agent in a solvent extraction process |
| DE2633112C2 (de) * | 1976-07-23 | 1985-04-11 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Verfahren zur Entfernung von Zersetzungsprodukten aus Extraktionsmitteln die zur Wiederaufarbeitung abgebrannter Kernbrenn- und/oder Brutstoffe verwendet werden |
| US5000927A (en) * | 1989-03-31 | 1991-03-19 | General Electric Company | Method of regulating a purex solvent extraction process |
| JPH0495899A (ja) * | 1990-08-14 | 1992-03-27 | Power Reactor & Nuclear Fuel Dev Corp | 核燃料サイクルから発生する使用済溶媒の抽出分離方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2936318A (en) * | 1958-11-24 | 1960-05-10 | Raymond H Moore | Fission product removal from organic solutions |
| US3708508A (en) * | 1971-04-09 | 1973-01-02 | Atomic Energy Commission | Method for the purification and recovery of tributyl phosphate used in reprocessing nuclear fuel |
| US3793408A (en) * | 1972-01-28 | 1974-02-19 | Atomic Energy Commission | Method for the purification of bis (2-ethyl-hexyl) phosphoric acid |
-
1974
- 1974-02-05 US US05/439,792 patent/US3943204A/en not_active Expired - Lifetime
-
1975
- 1975-01-13 GB GB131075A patent/GB1465241A/en not_active Expired
- 1975-01-15 CA CA217,987A patent/CA1034769A/en not_active Expired
- 1975-02-04 BE BE2054127A patent/BE825140A/xx unknown
- 1975-02-04 FR FR7503454A patent/FR2259834B1/fr not_active Expired
- 1975-02-05 JP JP1446275A patent/JPS50140795A/ja active Pending
- 1975-02-05 DE DE19752504786 patent/DE2504786A1/de not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2936318A (en) * | 1958-11-24 | 1960-05-10 | Raymond H Moore | Fission product removal from organic solutions |
| US3708508A (en) * | 1971-04-09 | 1973-01-02 | Atomic Energy Commission | Method for the purification and recovery of tributyl phosphate used in reprocessing nuclear fuel |
| US3793408A (en) * | 1972-01-28 | 1974-02-19 | Atomic Energy Commission | Method for the purification of bis (2-ethyl-hexyl) phosphoric acid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4311681A (en) * | 1980-05-19 | 1982-01-19 | Fmc Corporation | Method of regenerating phosphoric acid extraction solvent |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1465241A (en) | 1977-02-23 |
| FR2259834B1 (de) | 1978-02-24 |
| BE825140A (fr) | 1975-05-29 |
| CA1034769A (en) | 1978-07-18 |
| FR2259834A1 (de) | 1975-08-29 |
| JPS50140795A (de) | 1975-11-12 |
| DE2504786A1 (de) | 1975-09-11 |
| AU7787775A (en) | 1976-08-05 |
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